question_answer

Consider two nuclei of the same radioactive nuclide. One of the nuclei was created in a supernova explosion 5 billion years ago. The other was created in a nuclear reactor 5 minutes ago. The probability of decay during the next time is:

A)  different for each nuclei

B)  nuclei created in explosion decays first

C)  nuclei created in the reactor decays first

D)  independent of the time of creation